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Main Title: Investigation of liquid metal embrittlement of dual phase steel joints by electro-thermomechanical spot-welding simulation
Author(s): Frei, Julian
Biegler, Max
Rethmeier, Michael
Böhne, Christoph
Meschut, Gerson
Type: Article
Language Code: en
Abstract: A 3D electro-thermomechanical model is established in order to investigate liquid metal embrittlement. After calibration to a dual phase steel of the 1000 MPa tensile strength class, it is used to analyse the thermo-mechanical system of an experimental procedure to enforce liquid metal embrittlement during resistance spot welding. In this procedure, a tensile stress level is applied to zinc coated advanced high strength steel samples during welding. Thereby, liquid metal embrittlement formation is enforced, depending on the applied stress level and the selected material. The model is suitable to determine and visualise the corresponding underlying stresses and strains responsible for the occurrence of liquid metal embrittlement. Simulated local stresses and strains show good conformity with experimentally observed surface crack locations.
Issue Date: 22-Feb-2019
Date Available: 15-Sep-2020
DDC Class: 670 Industrielle Fertigung
Subject(s): RSW
advanced high strength steel
zinc coated steel
testing method
dual phase steel
electro-thermomechnical model
Journal Title: Science and Technology of Welding and Joining
Publisher: Taylor & Francis
Publisher Place: London
Volume: 24
Issue: 7
Publisher DOI: 10.1080/13621718.2019.1582203
Page Start: 624
Page End: 633
EISSN: 1743-2936
ISSN: 1362-1718
Appears in Collections:FG Fügetechnik » Publications

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